Photographic apparatus.



D. DIMENTBERG.

PHOTOGRAPHIC APPARATUS.

APPLICATION FILED APR.22| 1912.

Patented Oct. 19, 1915.

DAVID DIMEN'IBERG, OF CHICAGO, ILLINOIS.

PHOTOGRAPI-IIG APPARATUS.

Application filed April 22, 1912.

To all whom it may concern:

- Be it known that I, DAVID 'DIMENTBERG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Photographic Apparatus, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part ofthis specification.

My invention relates to photographic apparatus and has for its object an improved apparatus of this character of more particular utility in connection with machines utilized for rapid photography.

The appliances as disclosed herein would be of particular advantage, for instance, in machines in which the protograph is taken and developed almost immediately, the photographic device resting upon, or being directly associated with suitable developing mechanism. Such direct association of the photographic apparatus with the developing mechanism however being old, I do not claim that particular feature herein.

I will describe one embodiment of my invention more particularly by reference to the accompanying drawing illustrating this embodiment, in which Figure 1 is a side view partially in section of a photographic device constructed in accordance, with my invention; Fig. 2 is a view of an improved holding device, Fig. 3 is a sectional view on line a-c of Fig. 2, and Fig. 4 is a detail view of the setting mechanism.

Referring more particularly to Fig. 1, I show a barrel 1 of a photographic device which is suitably mounted on a carrying plate 2 through which a recess 3 is provided for inserting plates or films that have been exposed into devices not shown herein for developing and fixing purposes. The rear of the barrel is provided with a hood or fiexibletube 4 through which the arm is to be inserted to transfer the plate or film or button from the exposing carrier into the slot 3. In devices of this kind I- find that it is quite necessary to properly adjust the focus so that the image may be distinct and clear. The lens structure 5 is mounted at the left hand extremity of a movable pan shaped closure 6 for the barrel 1. This closure 6 extends around the sides of the barrel 1 and terminates in a strengthening rib 7. Strengthening ribs 33 are also provided for Specification of Letters Patent.

Patented Oct. 19, 1915.

Serial No. 692,245.

the barrel 1. A slot 8 is provided to limit the movement of this closure 6 from the right to the left or vice versa. The movement of this closure from left to right or vice versa adjusts the position of the lens structure 5 with relation to the sensitized element so as to adapt the photographic apparatus for making exposures between wide ranges.

In order to properly adjust the focus, the closure 6 carries an arm 9 which in cooperation with a pointer 10 serves to roughly set the closure with respect to the barrel, the

means to procure the delicate and more accurate adjustment being explained hereinafter. A suitable scale 11 is used to indicate the degree of movement necessary to accommodate the device for any desired distances. the elements 6 and 1 should such permanent adjustment be desirable. The novel feature of thus adjusting the focus in a device of this particular kind largely increases the value and its range of use.

Referring more particularly to Figs. 2 and 3, I have shown in detail the device used for carrying the sensitized elements. This carrier consists of a dished plate 13 adapted for mounting within the barrel 1 as shown more clearly in Fig. 1 and is adapted to be held in place by means of pins 1A cooperating with slots 15, 15. These slots 15, 15 are for the purpose of permitting the entire plate 13 to be rotated through an angular displacement of ninety degrees so that a picture may be taken either lengthwise or crosswise of the sensitized elements. This plate 18 as stated is to hold the sensitized element and is provided to accommodate three different sized elements. To this end a large opening 16 is provided in the central portion of the plate 13. Over this opening a pivoted plate 17 is mounted, being pivoted by means of the hinge 18. The upper extremity of the plate 17 is provided with a spring catch 19 adapted to engage a corresponding spring catch 20 provided upon the plate 13. The plate 13 also carries outwardly extending guides 21, 21 between 1 which the plate 17 is confined and these guides 21 have at their lower surfaces bentin sections to limit the degree of opening of the plate 17. lhen the plate 17 is swung outwardly, that is in a clockwise direction, (Fig. 3) until this plate engages the sections 22, then a suitable sensitized element of the A set screw 12 permanently holds size accommodated between the guides 21 may be laid upon the plate 17 and it is then swung back into the position of Fig. 3 to receive the image. In order to accommodate a smaller sensitized element the plate 17 carries a second plate 23 which is hinged thereto by means of the hinge 2 1. This second plate is adapted to be swung outwardly (Fig. 3) and also carries a spring catch 25 adapted to cooperate with the spring catch 19. Guides 26 are carried by the plate 17 to define the size of the sensitized element to be laid on top of the plate 23 when in its open position, and these guides likewise serve the purpose of guiding the sensitized element into its proper position when the plate 23 is closed into the position of Fig. 3. Bent-in portions 27 are again provided on the guides 26 to limit the opening of the plate 23. The plate 23 has a central preferably circular opening 28 behind which a supporting bracket 29 is mounted for the purpose of holding a button or similar sensitized element. It will thus be seen that three different sensitized elements may be accommodated by the carrier and this carrier may at the same time be rotated through an angle of ninety degrees. universal and serves many purposes. The devices which have hitherto been used for this rapid photography each usually consist of a body shaped structure to which the lens mechanism is fixedly secured so that no adjustment to focus the lens is possible. By reason of the improved structure which I have herein disclosed it will be seen that a range of adjustment varying from a few feet to several thousand feet may be readily made, thus to properly accommodate the device to take pictures under greatly varying conditions.

Fig. 4: will indicate more in detail the actual structure which I have employed to set the device for focusing purposes. The arm 9 which is rigidly secured to the structure 6 The device is thus quite slides within a grooved member 30 and has a proper opening through which the scale divisions may be properly read. A small pointer 31 carried by the arm 9 works in connection with the scale 11 for setting urposes. A pin 32 limits the movement 0 the element 6 by reason of its cooperation with the slotted portion 8.

IVhile I have thus described and shown one specific form of carrying out my invention, I do not mean thereby to limit myself to such specific embodiment, but

Having thus described one of the various applications, what I claim as new and desire to secure by Letters Patent is:

1. In a device of the character described the combination with an inclosing shell forming a dark chamber, means therein for holding a sensitized element, a closure for one extremity of said shell, a lens structure carried by said closure, flexible entrance means for said shell to permit accessibility to said element, and means for adjustably holding said closure upon said shell, said means including an arm carried by the closure and a cooperating element therefor carried by the shell.

2. In a device of the character described the combination with an inclosing shell forming a dark chamber, means therein for holding a sensitized element, a closure for one extremity of said shell, a lens structure carried by said closure, and means for adjustalr-ly holding said closure upon said shell, said means including an arm carried by the closure, a cooperating element therefor carried by. the shell, and a set screw to permanently secure said closure and shell together.

In witness whereof, I hereunto subscribe my name this 19th day of April, A. D., 1912.

DAVID DIMENTBERG.

lVitnesses:

HAZEL JAMES, A. S. DENNISON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

.IIALLM. A. 

